fix python style

Author: mengxr

python/pyspark/mllib/tests.py

@@ -19,7 +19,9 @@
 Fuller unit tests for Python MLlib.
 """
 
-import os, sys, tempfile
+import os
+import sys
+impprt tempfile
 import array as pyarray
 
 from numpy import array, array_equal
@@ -268,7 +270,6 @@ def test_classification(self):
         except OSError:
             pass
 
-
     def test_regression(self):
         from pyspark.mllib.regression import LinearRegressionWithSGD, LassoWithSGD, \
             RidgeRegressionWithSGD